Table 1 Differences in biological parameters and lenses between the ALS group and NALS group
From: Axial length shortening after orthokeratology and its relationship with myopic control
Parameter (Mean ± SD) | ALS (n = 54) | NALS(n = 52) | p value |
|---|---|---|---|
Axial length (mm) | 24.68 ± 0.90 | 24.50 ± 0.68 | 0.24 |
Spherical equivalent refractive error (D) | −2.98 ± 1.25 | −2.60 ± 1.02 | 0.09 |
Spherical refractive error (DS) | −2.68 ± 1.14 | −2.40 ± 0.96 | 0.18 |
With-the-rule astigmatism (DC) | −0.60 ± 0.58 | −0.38 ± 0.43 |  |
J0 | 0.28 ± 0.27 | 0.18 ± 0.20 | 0.04 |
J45 | −0.02 ± 0.16 | −0.01 ± 0.11 | 0.81 |
Equivalent e value | 0.62 ± 0.09 | 0.62 ± 0.07 | 0.98 |
Steep K (D) | 44.07 ± 1.59 | 43.81 ± 1.17 | 0.33 |
Flat K (D) | 42.92 ± 1.46 | 42.80 ± 1.02 | 0.64 |
Degree of toric design (D) | −0.06 ± 0.30 | − 0.04 ± 0.19 | 0.73 |
Diameter of the OK contact lens (mm) | 10.60 ± 0.19 | 10.56 ± 0.19 | 0.25 |
Grand of lensesa | L:46; A:8 | L:39; A:11 | 0.40 |